A buffer is prepared using acetic acid, CH3COOH, (a weak acid, pK = 4.75) and sodium acetate, CH,COONA (which provides acetate ions, the conjugate base), according to the following proportions: Volume of CH3COOH(aq): 109.0 mL Concentration of CH3COOH(aq): 1.281 M Volume of CH3COONA(aq): 142.0 mL Concentration of CH3COONA(ag): 1.043 M A 50 mL sample of this original buffer is transferred to a clean and dry beaker, to this solution 150 mL of deionized water is added. Calculate the pH of this new, diluted buffer solution. O 4.75 4.72 4.78 4.84 O 4.66

A buffer is prepared using acetic acid, CH3COOH, (a weak acid, pK = 4.75) and sodium acetate, CH,COONA (which provides acetate ions, the conjugate base), according to the following proportions: Volume of CH3COOH(aq): 109.0 mL Concentration of CH3COOH(aq): 1.281 M Volume of CH3COONA(aq): 142.0 mL Concentration of CH3COONA(ag): 1.043 M A 50 mL sample of this original buffer is transferred to a clean and dry beaker, to this solution 150 mL of deionized water is added. Calculate the pH of this new, diluted buffer solution. O 4.75 4.72 4.78 4.84 O 4.66

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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